Christopher Walter

Professor of Physics

Office Location: 
Box 90305 Physics Department, Duke University, Durham, NC 27710
Front Office Address: 
Box 90305, Durham, NC 27708-0305
Phone: 
(919) 660-2535

Overview

I am a professor in the physics department studying particle physics and cosmology. I try to understand both the nature of the ghostly particles called neutrinos in giant detectors deep underground, and why the expansion of the universe is accelerating using telescopes on top of mountains.   My background and training is originally in particle physics and I was part of the team that showed the sub-atomic particles called neutrinos have mass.  The leader of our team, T. Kajita was co-awarded the 2015 Nobel Prize in Physics for this discovery which cited the work of our collaboration.  Recently, I started an effort in observational cosmology at Duke, joining the Large Synoptic Survey Telescope (LSST) project, a giant  telescope that will be located in Chile designed to make a 10 year, three dimensional survey of the entire visible sky.  In LSST, we will focus on examining billions of galaxies, along with supernovae and other astronomical probes to try to determine the nature of the mysterious “Dark Energy” which is unaccountably causing the universe to pushed apart at a faster and faster rate.

Education & Training

  • Ph.D., California Institute of Technology 1997

  • M.S., California Institute of Technology 1991

  • B.A., University of California at Santa Cruz 1989

Richard, E, Okumura, K, Abe, K, Haga, Y, Hayato, Y, Ikeda, M, Iyogi, K, Kameda, J, Kishimoto, Y, Miura, M, Moriyama, S, Nakahata, M, Nakajima, T, Nakano, Y, Nakayama, S, Orii, A, Sekiya, H, Shiozawa, M, Takeda, A, Tanaka, H, Tomura, T, Wendell, RA, Akutsu, R, Irvine, T, Kajita, T, Kaneyuki, K, Nishimura, Y, Labarga, L, Fernandez, P, Gustafson, J, Kachulis, C, Kearns, E, Raaf, JL, Stone, JL, Sulak, LR, Berkman, S, Nantais, CM, Tanaka, HA, Tobayama, S, Goldhaber, M, Kropp, WR, and Mine, S et al. "Measurements of the atmospheric neutrino flux by Super-Kamiokande: Energy spectra, geomagnetic effects, and solar modulation." Physical Review D 94.5 (September 2016). Full Text

Abe, K, Haga, Y, Hayato, Y, Ikeda, M, Iyogi, K, Kameda, J, Kishimoto, Y, Marti, L, Miura, M, Moriyama, S, Nakahata, M, Nakajima, T, Nakayama, S, Orii, A, Sekiya, H, Shiozawa, M, Sonoda, Y, Takeda, A, Tanaka, H, Takenaga, Y, Tasaka, S, Tomura, T, Ueno, K, Yokozawa, T, Akutsu, R, Irvine, T, Kaji, H, Kajita, T, Kametani, I, Kaneyuki, K, Lee, KP, Nishimura, Y, McLachlan, T, Okumura, K, Richard, E, Labarga, L, Fernandez, P, Blaszczyk, FDM, Gustafson, J, Kachulis, C, Kearns, E, Raaf, JL, and Stone, JL et al. "Solar neutrino measurements in Super-Kamiokande-IV." Physical Review D 94.5 (September 2016). Full Text

Abe, K, Haga, Y, Hayato, Y, Ikeda, M, Iyogi, K, Kameda, J, Kishimoto, Y, Miura, M, Moriyama, S, Nakahata, M, Nakano, Y, Nakayama, S, Sekiya, H, Shiozawa, M, Suzuki, Y, Takeda, A, Tanaka, H, Tomura, T, Ueno, K, Wendell, RA, Yokozawa, T, Irvine, T, Kajita, T, Kametani, I, Kaneyuki, K, Lee, KP, McLachlan, T, Nishimura, Y, Richard, E, Okumura, K, Labarga, L, Fernandez, P, Berkman, S, Tanaka, HA, Tobayama, S, Gustafson, J, Kearns, E, Raaf, JL, Stone, JL, Sulak, LR, Goldhaber, M, and Carminati, G et al. "Real-time supernova neutrino burst monitor at Super-Kamiokande." Astroparticle Physics 81 (August 2016): 39-48. Full Text

Abe, K, Andreopoulos, C, Antonova, M, Aoki, S, Ariga, A, Assylbekov, S, Autiero, D, Barbi, M, Barker, GJ, Barr, G, Bartet-Friburg, P, Batkiewicz, M, Berardi, V, Berkman, S, Bhadra, S, Blondel, A, Bolognesi, S, Bordoni, S, Boyd, SB, Brailsford, D, Bravar, A, Bronner, C, Buizza Avanzini, M, Calland, RG, Cao, S, Caravaca Rodríguez, J, Cartwright, SL, Castillo, R, Catanesi, MG, Cervera, A, Cherdack, D, Chikuma, N, Christodoulou, G, Clifton, A, Coleman, J, Collazuol, G, Cremonesi, L, and Dabrowska, A et al. "Measurement of double-differential muon neutrino charged-current interactions on without pions in the final state using the T2K off-axis beam." Physical Review D 93.11 (June 2016). Full Text

Abe, K, Andreopoulos, C, Antonova, M, Aoki, S, Ariga, A, Assylbekov, S, Autiero, D, Barbi, M, Barker, GJ, Barr, G, Bartet-Friburg, P, Batkiewicz, M, Bay, F, Berardi, V, Berkman, S, Bhadra, S, Blondel, A, Bolognesi, S, Bordoni, S, Boyd, SB, Brailsford, D, Bravar, A, Bronner, C, Buizza Avanzini, M, Calland, RG, Cao, S, Caravaca Rodríguez, J, Cartwright, SL, Castillo, R, Catanesi, MG, Cervera, A, Cherdack, D, Chikuma, N, Christodoulou, G, Clifton, A, Coleman, J, Collazuol, G, and Cremonesi, L et al. "Measurement of Muon Antineutrino Oscillations with an Accelerator-Produced Off-Axis Beam." Physical review letters 116.18 (May 5, 2016): 181801-. Full Text

Abe, K, Andreopoulos, C, Antonova, M, Aoki, S, Ariga, A, Assylbekov, S, Autiero, D, Barbi, M, Barker, GJ, Barr, G, Bartet-Friburg, P, Batkiewicz, M, Bay, F, Berardi, V, Berkman, S, Bhadra, S, Blondel, A, Bolognesi, S, Bordoni, S, Boyd, SB, Brailsford, D, Bravar, A, Bronner, C, Calland, RG, Cao, S, Caravaca Rodríguez, J, Cartwright, SL, Castillo, R, Catanesi, MG, Cervera, A, Cherdack, D, Chikuma, N, Christodoulou, G, Clifton, A, Coleman, J, Collazuol, G, Cremonesi, L, Dabrowska, A, and De Rosa, G et al. "Measurement of the muon neutrino inclusive charged-current cross section in the energy range of 1–3 GeV with the T2K INGRID detector." Physical Review D 93.7 (April 2016). Full Text

Zhang, Y, Abe, K, Haga, Y, Hayato, Y, Ikeda, M, Iyogi, K, Kameda, J, Kishimoto, Y, Miura, M, Moriyama, S, Nakahata, M, Nakajima, T, Nakano, Y, Nakayama, S, Orii, A, Sekiya, H, Shiozawa, M, Takeda, A, Tanaka, H, Tomura, T, Wendell, RA, Irvine, T, Kajita, T, Kametani, I, Kaneyuki, K, Nishimura, Y, Richard, E, Okumura, K, Labarga, L, Fernandez, P, Gustafson, J, Kachulis, C, Kearns, E, Raaf, JL, Stone, JL, Sulak, LR, Berkman, S, Nantais, CM, Tanaka, HA, Tobayama, S, Goldhaber, M, and Carminati, G et al. "First measurement of radioactive isotope production through cosmic-ray muon spallation in Super-Kamiokande IV." Physical Review D 93.1 (January 2016). Full Text

Abe, K, Adam, J, Aihara, H, Akiri, T, Andreopoulos, C, Aoki, S, Ariga, A, Assylbekov, S, Autiero, D, Barbi, M, Barker, GJ, Barr, G, Bartet-Friburg, P, Bass, M, Batkiewicz, M, Bay, F, Berardi, V, Berger, BE, Berkman, S, Bhadra, S, Blaszczyk, FDM, Blondel, A, Bojechko, C, Bolognesi, S, Bordoni, S, Boyd, SB, Brailsford, D, Bravar, A, Bronner, C, Buchanan, N, Calland, RG, Caravaca Rodríguez, J, Cartwright, SL, Castillo, R, Catanesi, MG, Cervera, A, Cherdack, D, Chikuma, N, and Christodoulou, G et al. "Upper bound on neutrino mass based on T2K neutrino timing measurements." Physical Review D 93.1 (January 2016). Full Text

Abe, K, Adam, J, Aihara, H, Akiri, T, Andreopoulos, C, Aoki, S, Ariga, A, Assylbekov, S, Autiero, D, Barbi, M, Barker, GJ, Barr, G, Bartet-Friburg, P, Bass, M, Batkiewicz, M, Bay, F, Berardi, V, Berger, BE, Berkman, S, Bhadra, S, Blaszczyk, FDM, Blondel, A, Bojechko, C, Bolognesi, S, Bordoni, S, Boyd, SB, Brailsford, D, Bravar, A, Bronner, C, Calland, RG, Caravaca Rodríguez, J, Cartwright, SL, Castillo, R, Catanesi, MG, Cervera, A, Cherdack, D, Chikuma, N, Christodoulou, G, and Clifton, A et al. "Measurement of the charged-current quasielastic cross section on carbon with the ND280 detector at T2K." Physical Review D 92.11 (December 2015). Full Text

Takhistov, V, Abe, K, Haga, Y, Hayato, Y, Ikeda, M, Iyogi, K, Kameda, J, Kishimoto, Y, Miura, M, Moriyama, S, Nakahata, M, Nakajima, T, Nakano, Y, Nakayama, S, Orii, A, Sekiya, H, Shiozawa, M, Takeda, A, Tanaka, H, Tomura, T, Wendell, RA, Irvine, T, Kajita, T, Kametani, I, Kaneyuki, K, Nishimura, Y, Richard, E, Okumura, K, Labarga, L, Fernandez, P, Gustafson, J, Kachulis, C, Kearns, E, Raaf, JL, Stone, JL, Sulak, LR, Berkman, S, Nantais, CM, Tanaka, HA, Tobayama, S, Goldhaber, M, and Carminati, G et al. "Search for Nucleon and Dinucleon Decays with an Invisible Particle and a Charged Lepton in the Final State at the Super-Kamiokande Experiment." Physical review letters 115.12 (September 18, 2015): 121803-. Full Text

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